PT96011A - PROCESS FOR REMOVAL OF COATINGS COVERED BY PLASMA AND SINTERIZED SPRAYING, EMPLOYING LIQUID JET - Google Patents

PROCESS FOR REMOVAL OF COATINGS COVERED BY PLASMA AND SINTERIZED SPRAYING, EMPLOYING LIQUID JET Download PDF

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Publication number
PT96011A
PT96011A PT96011A PT9601190A PT96011A PT 96011 A PT96011 A PT 96011A PT 96011 A PT96011 A PT 96011A PT 9601190 A PT9601190 A PT 9601190A PT 96011 A PT96011 A PT 96011A
Authority
PT
Portugal
Prior art keywords
liquid
coating
substrate
jet
layer
Prior art date
Application number
PT96011A
Other languages
Portuguese (pt)
Inventor
Charles C Mccomas
John W Appleby
Gerard A Sileo
Herbert R Barringer
Michael J Patry
Original Assignee
United Technologies Corp
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by United Technologies Corp filed Critical United Technologies Corp
Publication of PT96011A publication Critical patent/PT96011A/en

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Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B24GRINDING; POLISHING
    • B24CABRASIVE OR RELATED BLASTING WITH PARTICULATE MATERIAL
    • B24C11/00Selection of abrasive materials or additives for abrasive blasts
    • B24C11/005Selection of abrasive materials or additives for abrasive blasts of additives, e.g. anti-corrosive or disinfecting agents in solid, liquid or gaseous form
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B08CLEANING
    • B08BCLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
    • B08B3/00Cleaning by methods involving the use or presence of liquid or steam
    • B08B3/02Cleaning by the force of jets or sprays
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B08CLEANING
    • B08BCLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
    • B08B9/00Cleaning hollow articles by methods or apparatus specially adapted thereto 
    • B08B9/08Cleaning containers, e.g. tanks
    • B08B9/093Cleaning containers, e.g. tanks by the force of jets or sprays
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B24GRINDING; POLISHING
    • B24CABRASIVE OR RELATED BLASTING WITH PARTICULATE MATERIAL
    • B24C1/00Methods for use of abrasive blasting for producing particular effects; Use of auxiliary equipment in connection with such methods
    • B24C1/006Methods for use of abrasive blasting for producing particular effects; Use of auxiliary equipment in connection with such methods using material without particles or pellets for deburring, removal of extended surface areas or jet milling of local recessions, e.g. grooves
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B24GRINDING; POLISHING
    • B24CABRASIVE OR RELATED BLASTING WITH PARTICULATE MATERIAL
    • B24C1/00Methods for use of abrasive blasting for producing particular effects; Use of auxiliary equipment in connection with such methods
    • B24C1/08Methods for use of abrasive blasting for producing particular effects; Use of auxiliary equipment in connection with such methods for polishing surfaces, e.g. smoothing a surface by making use of liquid-borne abrasives
    • B24C1/086Descaling; Removing coating films
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B26HAND CUTTING TOOLS; CUTTING; SEVERING
    • B26FPERFORATING; PUNCHING; CUTTING-OUT; STAMPING-OUT; SEVERING BY MEANS OTHER THAN CUTTING
    • B26F3/00Severing by means other than cutting; Apparatus therefor
    • B26F3/004Severing by means other than cutting; Apparatus therefor by means of a fluid jet

Claims (4)

10 r>. ·' 3 REIVINDICAÇÕES 1â.- Processo para a remoção de um revestimento aplicado por pulverização com plasma e sinterizado, utilizando um jacto de líquido, produzido por um dispositivo que possui meios para dirigir o referido jacto, meios para criar uma pressão suficiente para remover o revestimento, meios para estabelecer um movimento relativo entre o revestimento e o jacto líquido e meios para abastecimento do líquido, o qual compreende a) - meios para criar uma pressão suficiente para retirar o revestimento; b) - meios para estabelecer um movimento relativo entre o revestimento e o jacto líquido; c) - meios para abastecimento do líquido; e d) - meios para obrigar o líquido a embater no revestimento, de forma que tal embate provoca a erosão do revestimento até a camada de ligação do revestimento ao substrato ficar exposta; caracterizado pelo facto de nem a camada de ligação do revesti mento ao substrato nem o substrato sofrerem essencialmente qua quer dano e, portanto, poderem ser reutilizados. 2-.- Processo para a remoção de revestimentos escolhidos do grupo formado por revestimentos pulverizados com plasma, revestimentos pulverizados com chama e revestimentos sinterizados, de acordo com a reivindicação 1, caracterizado pelo facto de nem a camada de ligação do substrato ao revestimento nem o substrato serem danificados. 3-.- Processo para a remoção de revestimentos esmeriláveis, de acordo com a reivindicação 1, caracterizado pelo facto de o jacto de líquido ser regulado de maneira que nem a camada de ligação do revestimento ao substrato nem o substrato sejam essencialmente danificados. - 1110 r >. 1. A process for the removal of a plasma-sintered spray coating using a jet of liquid produced by a device having means for directing said jet, means for creating a pressure sufficient to remove the coating means, means for establishing a relative movement between the coating and the liquid jet and means for supplying the liquid, which comprises a) means for creating sufficient pressure to remove the coating; b) means for establishing a relative movement between the coating and the liquid jet; c) means for supplying the liquid; and d) means for causing the liquid to hit the coating, such a collision causing erosion of the coating until the coating bonding layer to the substrate is exposed; characterized in that neither the coating layer of the coating on the substrate nor the substrate suffers essentially any damage and therefore can be reused. 2. A process for the removal of coatings selected from the group consisting of plasma sprayed coatings, flame spray coatings and sintered coatings, according to claim 1, characterized in that neither the substrate bonding layer to the coating nor the substrate are damaged. 3. A process for the removal of abrasive coatings according to claim 1, characterized in that the liquid jet is regulated in such a way that neither the coating layer of the coating on the substrate nor the substrate is substantially damaged. - 11 4â. - Processo para a remoção de um revestimento que actua como barreira térmica, de acordo com a reivindicação 1, caracte-rizado pelo facto de se controlar o jacto de líquido de modo que nem a ligação do substrato ao primário nem o substrato sejam praticamente danificados. 5S.- Processo para a remoção de um revestimento de material abrasivo, de acordo com a reivindicação 1, caracterizado pelo facto de se controlar o jacto líquido de tal maneira que nem a camada de ligação do substrato ao revestimento nem o substrato sejam praticamente danificados. 6â.- Processo para a remoção de um revestimento superficial duro, de acordo com a reivindicação 1, caracterizado pelo facto de nem a camada de adesão nem o substrato serem praticamente afectados. 7â.- Processo de acordo com a reivindicação 1, caracterizado pelo facto de a pressão do líquido estar compreendida entre cerca de 1400 Kg/cm^ e cerca de 4200 Kg/cm^ (cerca de 20 000 psi e cerca de 60 000 psi). 8â.~ Processo de acordo com a reivindicação 1, caracterizado pelo facto de se utilizar um injector como meio para dirigir a corrente de líquido.4â. A process for the removal of a thermal barrier coating according to claim 1, characterized in that the liquid jet is controlled so that neither the bonding of the substrate to the primer nor the substrate is practically damaged. 5. A process for the removal of a coating of abrasive material according to claim 1, characterized in that the liquid jet is controlled in such a way that neither the bonding layer of the substrate to the coating nor the substrate is practically damaged. 6. A process for the removal of a hard surface coating according to claim 1, characterized in that neither the adhesion layer nor the substrate is substantially affected. 7. A process according to claim 1, wherein the liquid pressure is from about 1400 kg / cm³ to about 4000 kg / cm³ (about 20,000 psi to about 60,000 psi) . 8. A method according to claim 1, characterized in that an injector is used as a means for directing the liquid stream. 95.- Processo de acordo com a reivindicação 1, caracterizado pelo facto de o líquido empregado ser escolhido do grupo de líquidos que não degradam a camada de primário, e têm uma viscosidade compreendida entre cerca de 0,25 centipoise e cerca de 5,00 centipoise a 25°C e à pressão de 1 atmosfera.A process according to claim 1, wherein the liquid employed is chosen from the group of liquids which do not degrade the primer layer, and have a viscosity of from about 0.25 centipoise to about 5.00 centipoise at 25 ° C and at 1 atmosphere pressure. 101.- Processo de acordo com a reivindicação 1, caracterizado pelo facto de o líquido empregado ser escolhido do grupo for- 12 A / /A process according to claim 1, wherein the liquid used is selected from the group consisting of: // nado *bor líquidos à base de água. li··- Processo de acordo com a reivindicação 1, caracterizado Delo facto de o líquido utilizado ser essencialmente água. 12a.- Processo de acordo com a reivindicação 1, caracterizado oelo facto de o ângulo entre a corrente de líquido do jacto e o "evestimento estar compreendido entre 20° e 70°, de forma que o referido ângulo obriga a corrente de líquido a remover os fragmentos do revestimento. 13a.- Processo para a remoção da camada de ligação dum revesti-nento utilizando um jacto de líquido produzido por um dispositivo que compreende, meios para dirigir o jacto de líquido, mei-ds para criar uma pressão suficiente para remover a camada de ligação, meios para proporcionar o movimento relativo entre a camada de ligação e o jacto de líquido e meios para abastecimento de líquido, caracterizado pelo facto de compreender as operações que consistem em se obrigar o jacto de líquido a embater na camada de ligação do revestimento ao substrato, provocando a erosão da referida camada de ligação até que o material do substrato fique exposto, de forma que o material do substrato não sofre essencialmente nenhum dano. 14a.- Processo para a remoção da camada de ligação dum revestimento a um substrato, obtido por um método que consiste em pulverização com plasma e deposição de vapor, de acordo com a reivindicação 13, caracterizado pelo facto de o material do substrato não sofrer substancialmente qualquer danificação provocada pelo jacto. Processo de acordo com a reivindicação 13, caracterizado pelo facto de a pressão do líquido estar compreendida entre cer p p a de 1400 Kg/cm e cerca de 4200 Kg/cm (cerca de 20 000 psi eWater based liquids. A process according to claim 1, characterized in that the liquid used is essentially water. 12. A method according to claim 1, wherein the angle between the liquid stream of the jet and the coating is between 20 ° and 70 °, so that said angle causes the liquid stream to remove the coat fragments. 13. A process for removing the bonding layer from a coating using a jet of liquid produced by a device comprising means for directing the jet of liquid to create a pressure sufficient to remove the bonding layer, means for providing the relative movement between the connecting layer and the liquid jet and means for supplying liquid, characterized in that it comprises the operations consisting in forcing the liquid jet to strike the layer of connection of the coating to the substrate, causing erosion of said bonding layer until the substrate material is exposed, so that the substrate material does not suffer essentially any damage. 14. A method for removing the bonding layer from a coating to a substrate, obtained by a method consisting of plasma spraying and vapor deposition, according to claim 13, characterized in that the substrate material does not substantially suffer damage caused by the jet. A process according to claim 13, characterized in that the pressure of the liquid is between about 1400 kg / cm³ and about 4200 kg / cm³ (about 20,000 psi). cerca de 60 000 psi). 16â.- Processo de acordo com a reivindicação 13, caracterizado pelo facto de se utilizar um injector como meio para a orientação da corrente de líquido.about 60,000 psi). 16. A method according to claim 13, characterized in that an injector is used as a means for orienting the liquid stream. 175.- Processo de acordo com a reivindicação 13, caracterizado pelo facto de se escolher o líquido empregado do grupo formado por todos os líquidos que não danificam o material do substrato e que tem uma viscosidade compreendida entre 0,25 centipoise e 5,00 centipoise, 25°C e â pressão de 1 atmosfera. 18â.- Processo de acordo com a reivindicação 13, caracterizado )elo facto de se escolher o líquido utilizado do grupo formado )or líquidos à base de água. I9â.- Processo de acordo com a reivindicação 13, caracterizado pelo facto de se escolher o líquido empregado ser água. 20^.- Processo de acordo com a reivindicação 13, caracterizado pelo facto de o ângulo formado entre o jacto de líquido e a camada de ligação do revestimento com o substrato ficar compreendido entre 20° e 70°, de forma que o citado ângulo obriga o jacto de líquido a remover os fragmentos da camada de primário, Lisboa, 27 de Novembro de 1990175. A process according to claim 13, wherein the liquid employed in the group is formed from all liquids which do not damage the substrate material and which have a viscosity ranging from 0.25 centipoise to 5.00 centipoise , 25 ° C and 1 atmosphere pressure. 18. A process according to claim 13, characterized in that the liquid used in the formed group is selected from water-based liquids. 9. A process according to claim 13, wherein the chosen liquid is water. 20. The method of claim 13, wherein the angle formed between the liquid jet and the coating layer of the coating with the substrate is between 20 ° and 70 °, so that said angle causes the jet of liquid to remove the fragments of the primary layer, Lisbon, November 27, 1990 0 Agente Oficial da ProDriedade Industrial0 Official Agent of Industrial Prodrive ft.Casvillio, 201-3. E.-10GQ USuOA Telefs. 651339-654613ft.Casvillio, 201-3. E.-10GQ USuOA Telefs. 651339-654613
PT96011A 1989-11-27 1990-11-27 PROCESS FOR REMOVAL OF COATINGS COVERED BY PLASMA AND SINTERIZED SPRAYING, EMPLOYING LIQUID JET PT96011A (en)

Applications Claiming Priority (1)

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US44166689A 1989-11-27 1989-11-27

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Country Link
US (2) US5167721A (en)
EP (1) EP0430856B1 (en)
JP (1) JP2742471B2 (en)
KR (1) KR100198896B1 (en)
CN (1) CN1027142C (en)
AU (1) AU642928B2 (en)
BR (1) BR9005984A (en)
CA (1) CA2030936C (en)
DE (1) DE69020507T2 (en)
ES (1) ES2074151T3 (en)
FI (1) FI905836A (en)
HK (1) HK173095A (en)
IE (1) IE68059B1 (en)
IL (1) IL96485A (en)
MX (1) MX172981B (en)
NO (1) NO905116L (en)
PT (1) PT96011A (en)
RU (1) RU2071507C1 (en)
YU (1) YU226390A (en)

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Publication number Publication date
JPH0463635A (en) 1992-02-28
AU642928B2 (en) 1993-11-04
CA2030936A1 (en) 1991-05-28
NO905116L (en) 1991-05-28
YU226390A (en) 1993-10-20
AU6697290A (en) 1991-05-30
FI905836A0 (en) 1990-11-27
IE68059B1 (en) 1996-05-15
NO905116D0 (en) 1990-11-27
IL96485A0 (en) 1991-08-16
MX172981B (en) 1994-01-26
USRE35611E (en) 1997-09-23
JP2742471B2 (en) 1998-04-22
US5167721A (en) 1992-12-01
FI905836A (en) 1991-05-28
KR100198896B1 (en) 1999-06-15
EP0430856B1 (en) 1995-06-28
HK173095A (en) 1995-11-17
BR9005984A (en) 1991-09-24
CN1052264A (en) 1991-06-19
ES2074151T3 (en) 1995-09-01
IE904268A1 (en) 1991-06-05
CA2030936C (en) 2000-03-28
DE69020507D1 (en) 1995-08-03
DE69020507T2 (en) 1996-01-04
CN1027142C (en) 1994-12-28
KR910009344A (en) 1991-06-28
EP0430856A1 (en) 1991-06-05
RU2071507C1 (en) 1997-01-10
IL96485A (en) 1994-11-11

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